var that = this;
AMap.plugin(["AMap.Driving"], function () {
  var drivingOption = {
     policy: AMap.DrivingPolicy.LEAST_TIME,
  };
  var driving = new AMap.Driving(drivingOption); //构造驾车导航类
    driving.search(
       new AMap.LngLat(that.positionLng, that.positionLat),
          new AMap.LngLat(
             that.stationDetail.longitude,
             that.stationDetail.latitude
           ),
          function (status, result) {
             console.log(result);
             driving.searchOnAMAP({
               origin: result.origin,
               destination: result.destination,
             });
           }
         );
     });

点击导航到此处弹出选项，选择高德地图要调起高德app
但是现在仅仅是规划了路线，没有调起app
查了一下资料，driving.searchOnAMAP方法就是调起地图的方法，但是一直没生效，也不报错，高德官网的例子却是正常生效的，不知道哪里出了问题